1. Professor, Dept. of Civil Engineering, North Carolina State Univ., Campus Box 7908, Raleigh, NC 27695.
2. Graduate Research Assistant, Dept. of Civil Engineering, North Carolina State Univ., Campus Box 7908, Raleigh, NC 27695.
3. LRS Group Supervisor, Geographic Information System Unit, North Carolina Dept. of Transportation, 1554 Mail Service Center, Raleigh, NC 27699.
4. P&A Section Manager, Geographic Information System Unit, North Carolina Dept. of Transportation, 1554 Mail Service Center, Raleigh, NC 27699.
5. Director, Geographic Information System Unit, North Carolina Dept. of Transportation, 1554 Mail Service Center, Raleigh, NC 27699.